Patent
1976-09-16
1978-05-30
Griffin, Robert L.
325323, 179 1555R, H04B 110
Patent
active
040926036
ABSTRACT:
The pulse envelope of a chirped or phase coded pulse is separated from the phase modulation in such a way that the bandwidth of the signal output is decreased while the pulse width is maintained. This result is accomplished by injecting the pulse into two mixers coupled in parallel. The first mixer combines the coded pulse with a constant frequency signal generated by a local oscillator to obtain a resultant signal having an upper sideband whose phase is the sum of the phases of the coded pulse and a lower sideband whose phase is the difference between the phases of the two signals injected into the first mixer. The lower sideband of the resultant signal is filtered out with an upper sideband bandpass filter to obtain an upper sideband signal which is combined with the coded pulse in a second mixer. The second mixer output is phased through a lower sideband bandpass filter to obtain an output pulse having a phase independent of the phase of the coded pulse input, a pulse width equal to that of the coded pulse, and a pulse amplitude proportional to that of the coded pulse. Pulse compression in the frequency domain is therefore accomplished.
REFERENCES:
patent: 2683213 (1954-07-01), Earp
patent: 3290600 (1966-12-01), Malnar
patent: 3757331 (1973-09-01), Moulton
patent: 3766477 (1973-10-01), Cook
Griffin Robert L.
Hughes Aircraft Company
Link, Jr. Lawrence V.
MacAllister W. H.
Ng Jin F.
LandOfFree
System for obtaining pulse compression in the frequency domain does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for obtaining pulse compression in the frequency domain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for obtaining pulse compression in the frequency domain will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-471853